In the UK, radical new climate change commitments will set the country on course to cut carbon emissions by 78% by 2035, the British government has announced.
According to BBC News, hitting the targets would require more electric cars, low-carbon heating, renewable electricity and, for many, cutting down on meat and dairy.
For the first time, climate law will be extended to cover international shipping and aviation.
But Labour said the government had to match "rhetoric with reality".
It urged Boris Johnson to treat "the climate emergency as the emergency it is" and show "greater ambition".
The prime minister's commitments, which are to become law, bring forward the current target for reducing carbon emissions by 15 years. This would be a world-leading position.
Homes will need to be much better insulated, and people will be encouraged to drive less and walk and cycle more. Aviation is likely to become more expensive for frequent fliers.
For much more on this development here and also this link from the UK Chamber of Shipping.